Furnace



Jun@ 5,1923. 1,457,557

. H. E. SMYTHE Nvsewom WITNESS/ I June 5,v 1923. 1,457,557

y H. Ev. SMYTHE FURNACE;

Filed Feb. 2S 1921 4 sheets-sheet 2 z2 .Z 1i' f a f2 f i; f/ ff r/ 3o O3l Ffy WITNESS lwvem'om June 5, 19.23.

H. E. sMYTHE FURNACE 4 Sheets-Sheet 5 Filed Feb. 28, 1921 ES I June 5,1923.

1,457,557 H. E. SMYTHE f FURNACE 4 sheets-sheet 4 Filed Feb. 28, 1921Patented June 5, 1923.

Tf1-:Nr carica..

nomen E. SMYTHE, or PITTSBURGH, rENlasznvrun.` i

FURNACE.

Y Application med rblruary 2s, 1921i semina' gases.;

To all 'whom/t mil/y concern:

Beit known that I, Homer a citizen-of the United Stat s, residing atPittsburgh, inthe county of ihlleghen State of Pennsylvania, haveinvente new and useful improvements in Furnaces, of which the followingis a specification.

My invention relates to furnaces and more particularly to metallurgicalfurnaces where xn oil is used as -a fuel.

The object of this invention is to provide for furnaces of the openhearth or other type readily operated means whereby oil burners vmay beeasily withdrawn from, and restored to, their normal positions.vIAnother object is to provide means whereby such burners may be sowithdrawn and'restored by the n furnace attendant from a single station,preferably Iat the back of the furnace where the oil and steam or airregulating stand is located. Other ob'ects pertain to the details andtheir com inations. n

Referring to'the accompanying drawings, Fig. 1 is a vertical sectionthrough a portion of one end of an open hearth furnace, showing parts ofmy invention in side elevation;

. Fig. 2, a vertical cross-section-of Fig. 1 on 'the line II- II; Fig.3, a horizontal section of Fig. 1 on the line III-111;Fig. 4, a rearview of the furnace, showing Vthe means by which the burners areoperated from the back of the furnace; Fig. 5, an enlarged view showingmy burner and its supporting means in side elevation, some adjacentparts being in section; Fig. 6, a vertical longitudinal section throughone of the burners and 'its supporting means, a part being in section;and Fig. f7 a sectional detail of a fragment of the burner carriage;

On the drawings, 1 designates the hearth of an open-hearth furnace and 2the combustion chamber at dne end of the furnace, it bein understoodthat there isa similar combustion chamber vat the end of the furnaceopposite that shown. As is usual the com bustion chamber is somewhatabove the bottom of the melting chamber 3.- l

4 is an oil-burner comprismgi the burner .head 5 with the axial passage6 extending from the end thereof. The ends of this pasy sagaare threadedto `receive the burner ipe-g 7 and the oil inlet fitting ceiving end ofthe burner-head 5, the pas-v 8. At the oi -resa 6 1s contracted' andthreaded toward the o er end to receive theoil-fcarrying pipe 9vn'ievcfhat smaller than the passage and E. Stamm,.-

and'

projecting Va shontdistance from the' burner.

screwed intoan opening in the 'side of the burner-head for theconveyance of steam or a1r or both into the burner-head. The free end ofthe burner-pipe 7 is held by the cardepression may be opened upwardly asshown. At leach side of the combustion chamber 1s a vertical u'e orpassage 14 lead- -ing to the usual or preferred type of regenerator.This feature is common and forms no part of the invention defined by theappended claims. The bracket 16' provided with the upwardly andoutwardly inclined sockets 17 is secured to the `furnace or othersupport above the opening 11. A pair of inclined rods 18 and 19 havetheir lower ends secured in the said sockets y the. et screws 20. Theouter ends of the ro s are secured by the set screws 21 in openings inthe spacer 22. The upper end of the spacer lis connected bv theadjustable lbraces 23 to the furnace.' The lower end of thev spacer 22supports the sheave 24 with its pivot 25 at right angles to the planethrough both rods 18 and 19.

The carriage 15 .has the sideplates 26 at lopposite x sides of the saidrods and supported on the axle 27 of the-wheel 28 lying lbetween therods and grooved to receive both of them, whereby the wheel is supportedby the rod or track 18 and prevented Vfrom lateral and wab'blingmovements. The axle 27 supports the pendent bars -2 one at each side ofthe wheel. They are spaced apart at their lower end b 4the block 30bolted thereto and carrying t e upwardly and outwardly inclined stud 31.This stud is secured'by the set-screw 32 in an opening- 33 in thetie-block 34havin an opening 35 in whichy the'burner head 5 1s securedby the set-screw 36. The plates 26 carry the cross-piece 37 in whichthescrew 38 is'swiveled, while the threaded end vof the screw works in thenut 39 carried by the bars 29. 10 is a wing or handle for turningthescrew. `By turning the handle 40 the angular relation of the). burnerpipe 7 canbe adjusted in :a vertica direction. The carriage 15 isprovided wit `head into the burner-pipe. 10,v is a fitting l nected toan oil-inlet `fitting the two grooved wheels 41 and 42, one running onthe upper side of the rod 19 and the other on the lower side thereof toprevent the carriage from rocking on the axle 27 and from lateralmovements'.

Each end of the furnace has the same construction as that described andshown, and each end thereof has a burner mounted and operated like that'just described. On Fig. 4 I have shown each side of the furnace with apair of rods 18 and 19, a spacer 22, and

a. sheave 24 at each end thereof. Each carriage 15 has attached theretoan operating cable 43, which passes over the adjacent sheave 24 andthence downwardly under the sheaves 44; thence horizontally over thesheave 45 and under the sheave 46 toward the rear of the furnace; andthence upwardly and over the sheave 47 and under the sheave 48 towardthe center line of the rear of the furnace. The sheaves 44 to 48 arebeneath the furnace structure. From the sheave 48 the cable 43 passesupwardly and over the sheave 49 which is above the iioor at one side ofthe regulating stand 50 where the furnace attendant is stationed. Fromthe sheave 49 the cable extends downwardly through the two stop-guides51 and 52. A handle or stop 53 is attachedptoeach cable between thestop-guides. The handle 53 engages the stop-guide 51 when the carriage15 is at its lower or inner position and against the stop-guide 52, whenthe carriage is at its outer position whichis next to the spacer 22.Fig. 4 shows diagrammatically the furnace and the course of the cables43 with some of the parts associated therewith. A counterweightl isconnected to each cable below the" stop-guide 52 to counterbalance thecarriage 15 and its load.

54 is an oil-supply pipe at the re'ar of the furnace and has a verticalpipe 55 between the cables at the operators stand 50. The top of thepipe 55 which is within easy reach of the operator is rovided with thehorizontal pipe 56 exten ing in opposite directions from the pipe 55. Ateach end of the pipe 56 is connected the downwardly extending verticalpipe 57, the pipes 57 being respectively connected to lthe horizontalpipes58 which each lead to a flexible pipe 59 con- 8. At 60 is a valvefor admitting oil from the pipe 55 to either pipe 56.

Steam or air is admitted to the steam or air inlet fittings 10 by aseries of elements paralleling those by which oil is admitted to thefittings 8. The elements for convey ing the steam or air are given thesame ref- .erence numeralsas have been used for the.

elements for conveying oil except that prime marks have beenI added tothe numerals designating elements conveying the steaml or air.

When rthe furnace isi'n operation," one burner is projecting into thefurnace through the opening 11, the valves 60 and 60 .being turned toadmit oil and steam to that burner, while the other burner is heldoutside the furnace by the counterweight 61 attached to its operatingcable 43. Vhen it is desired to reverse the iiow of fuel and gasesthrough vthe furnace and its regenerators, the handle 53 on the cableattached to the idle burner is raised, allowing its supporting carriage15 to travel down its track and pass its burner tube 7 into the furnace.The valves 60 and 60 are shifted to cut'oii' the oil and steam from theiirst burner and direct them to the second burner. The first burner isthen withdrawn from the furnace by the attendant pulling down on the proer handle 53, whereupon the first burner ecomes idle.

Heretofore it has been necessary for the attendant at the centralregulating l'stand at the rear of the furnace, when he wishes to reversethe furnace, to cut olf the oil and steam, walk to one end of thefurnace and pull out the burner 'ust in use, walk to the other end ofthe rnace and insert the burner therein and then Walk back to theregulating stand before he can turn the oil and steam into the burner.Byr this practice much time is lost as it has to be repeated for eachreversal of the furnace which occursl many times a day. By my inventionall the operations required for reversal may be accomplished latone'central place.

I claim:

1. In a reversing furnace, a meltin hearth, a combustion chamber at eachen of the chamber, an oil burner at each end of the furnace, a travelingsupport for each burner for plrojecting it into its adjacent combustionc amber and retracting it therefrom, an operators stand, means at -thestand having o erative connection with eachl support, where y theoperator may so project and retract each burner at will, and means forsupplying fluid fuel to either burner at will.

2. In a reversing furnace, a, melting hearth, a combustion chamber ateach end of the chamber, an oil burner at each end of the furnace, atraveling support for each' burner for rojecting it into its adjacentcombustion c amber and retract-ing it therefrom, an operators sta-nd,means at the j stand having o erative connection with each support;where y the operatormay so project and retract each burner at will, andmeans at the said stand for supplying duid fuel to either burner at 3.In a,- reversing furnace, a meltin hearth, a (':ombuation chamber ateach end o thel chamber, an oil burner at each end of the furnace, acarria e supporting .each burner, ay track on whic each carria maytravel toward and away from the jacent combustion chamber, an operatorsstand, means at the stand whereby the operator may cause each carriageso to travel at will, and means at the stand'for supplying luid fuel toeither burner at will.

4. In a reversing furnace, a melting hearth, a combustion chamber ateach end of the chamber, an oil burner at each end of the furnace, acarriage supporting each, burner, a track on which each carriage maytravel toward and away from the adjacent combustion chamber, each trackhaving its outer end higher than theA end nearest the furnace, anoperators stand, means at the stand whereby the operator may cause'eachcarriage to travel at will outwardly on the said track andl to alloweach carriage to travel by avity toward the furnace, vand means at tlestand for supplying fluid fuel to either burner at will.

5. ln a reversing furnace, a combustion chamber at each end thereof, aseparate oil burner for each .combustion chamber, a traveling supportfor each burner movable to project its burner into the adjacentcombustion chamber and retract it therefrom, an operators lstand at oneend of the furnace, a separate operating means attached to each burnersupport and leading to the said stand, and means below the furnace floorto contain the operating means extending from the vicinity of the burnersupport to that of the stand.

6. In a reversing furnace a track opposite the combustion chamberthereof and com- 3s prising a pair of spaced outwardly-extendingparallel rods, a carriage having travel thereon and comprising avertical plate at each side of the track, a peripherally grooved wheelsupported by the plates and having travel between the bars and havingits groove registering with both rods, and means for controlling at willthe position of the carriage on the track, and an oil burner supportedlb the carriage and arranged to be projecte into the combustion chamberand retracted therefrom by the .alternate operations of the carriage. 7.In a reversin furnace, a track opposite the combustion c amber thereofand comprising a pair of spaced outwardly-extendlng parallel rods, acarriage having travel thereon and comprising a vertical plate at eachside of the track a peripherally grooved wheel supported b the platesand aving travel between the bars and having its groove registering withboth rods, means for controlling at will the position of the carriage onthe track, an oil burner supported by the carriage and arranged to beprojected into the combustion chamber and retracted therefrom by thealternate operations of the carriage, and means for ad'ustin the angularposition in a vertical plane.` igned at Pittsburgh, this 18th day ofFebruary, 1921.

